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Tri-molybdenum phosphide (Mo 3 P) and multi-walled carbon nanotube junctions for volatile organic compounds (VOCs) detection

Journal Article · · Applied Physics Letters
DOI:https://doi.org/10.1063/5.0059378· OSTI ID:1850439
 [1];  [2];  [2];  [3];  [3];  [4];  [4];  [5];  [2];  [2];  [6];  [6];  [7];  [8];  [2]
  1. Elizabeth City State University, Elizabeth City, NC (United States). Department of Mathematics, Computer Science and Engineering Technology; Elizabeth City State Univ., NC (United States)
  2. Elizabeth City State University, Elizabeth City, NC (United States). Department of Mathematics, Computer Science and Engineering Technology
  3. Illinois Institute of Technology, Chicago, IL (United States). Department of Chemical and Biological Engineering
  4. Old Dominion University, Norfolk, VA (United States). Department of Electrical and Computer Engineering
  5. Bretagne Loire University (UBL), Lorient (France). Smart Plastics Group
  6. Qatar University, Doha (Qatar). Center for Advanced Materials
  7. National Institute of Technology Delhi, New Delhi (India)
  8. North Carolina Central University, Durham, NC (United States). Center for Research Excellence in Science and Technology (CREST), Department of Mathematics and Physics
Detection and analysis of volatile organic compounds' (VOCs) biomarkers lead to improvement in healthcare diagnosis and other applications such as chemical threat detection and food quality control. Here, we report on tri-molybdenum phosphide (Mo3P) and multiwalled carbon nanotube (MWCNT) junction-based vapor quantum resistive sensors (vQRSs), which exhibit more than one order of magnitude higher sensitivity and superior selectivity for biomarkers in comparison to pristine MWCNT junctions based vQRSs. Transmission electron microscope/scanning tunneling electron microscope with energy dispersive x-ray spectroscopy, x-ray diffraction, and x-ray photoelectron spectroscopy studies reveal the crystallinity and the presence of Mo and P elements in the network. The presence of Mo3P clearly enhanced the performance of vQRS as evidenced in sensitivity and selectivity studies. The vQRSs are stable over extended periods of time and are reproducible, making them a potential candidate for sensing related applications.
Research Organization:
North Carolina Central Univ., Durham, NC (United States)
Sponsoring Organization:
National Science Foundation; Office of Naval Research; Qatar National Foundation; US Office of Naval Research (ONR); USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
NA0003979
OSTI ID:
1850439
Alternate ID(s):
OSTI ID: 1865808
Journal Information:
Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 11 Vol. 119; ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English

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